Gymnastics Lens

I posted this is the sports forum, but i thought i would ask the actual D200 users here.I have the opportunity to shoot a D1 womans gymnastics event with an all access pass. I plan on renting 1 lens to mount on my nikon D200. I own a 50mm 1.8D and a 35mm 1.8g. I know i am going to run into iso problems with the d200 so the lens selection is crucial. Was thinking the 70-200 2.8 but was cautioned by a regular shooter of the event and their suggestion was to possibly rent an 85mm 1.4g or a 135mm f2 instead. This will just be for fun and my portfolio and i dont mind running them through NR. What is your experience? Any help is greatly appreciated!